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1680006844 = 221724705983
BaseRepresentation
bin110010000100010…
…1101111010111100
311100002020012010201
41210020231322330
511420040204334
6434412213244
756426552065
oct14410557274
94302205121
101680006844
1179235800a
123aa76a224
1320a0992b9
1411d19d56c
159c754c14
hex6422debc

1680006844 has 12 divisors (see below), whose sum is σ = 3112953984. Its totient is φ = 790591424.

The previous prime is 1680006841. The next prime is 1680006851. The reversal of 1680006844 is 4486000861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680006841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12352924 + ... + 12353059.

It is an arithmetic number, because the mean of its divisors is an integer number (259412832).

Almost surely, 21680006844 is an apocalyptic number.

It is an amenable number.

1680006844 is a deficient number, since it is larger than the sum of its proper divisors (1432947140).

1680006844 is a wasteful number, since it uses less digits than its factorization.

1680006844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24706004 (or 24706002 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 1680006844 is about 40987.8865520046. The cubic root of 1680006844 is about 1188.7860048442.

The spelling of 1680006844 in words is "one billion, six hundred eighty million, six thousand, eight hundred forty-four".

Divisors: 1 2 4 17 34 68 24705983 49411966 98823932 420001711 840003422 1680006844